US7444890B2 - Pipetting device - Google Patents

Pipetting device Download PDF

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Publication number
US7444890B2
US7444890B2 US10/544,386 US54438603A US7444890B2 US 7444890 B2 US7444890 B2 US 7444890B2 US 54438603 A US54438603 A US 54438603A US 7444890 B2 US7444890 B2 US 7444890B2
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US
United States
Prior art keywords
pipette
housing
raceway
end portion
slider
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US10/544,386
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US20060144168A1 (en
Inventor
Andrzej Czernecki
Wojciech Wyszogrodzki
Andrzej Jankowski
Piotr Urban
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PZ HTL SA
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PZ HTL SA
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Publication date
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Assigned to PZ HTL SPOLKA AKCYJNA reassignment PZ HTL SPOLKA AKCYJNA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WYSZOGRODZKI, WOJCIECH, JANKOWSKI, ANDRZEJ, URBAN, PIOTR, CZERNECKI, ANDRZEJ
Publication of US20060144168A1 publication Critical patent/US20060144168A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02—Burettes; Pipettes
    • B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
    • B01L3/0213—Accessories for glass pipettes; Gun-type pipettes, e.g. safety devices, pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02—Burettes; Pipettes
    • B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/08—Ergonomic or safety aspects of handling devices
    • B01L2200/087—Ergonomic aspects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2400/00—Moving or stopping fluids
    • B01L2400/04—Moving fluids with specific forces or mechanical means
    • B01L2400/0475—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure
    • B01L2400/0487—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure fluid pressure, pneumatics

Definitions

  • This invention relates to a pipetting device for aspirating liquid into a pipette and dispensing liquid from the pipette.
  • pipetting devices e. g. from the German patent publication No. 3818704 or U.S. Pat. Nos. 3,963,061, 4,624,147 and 6,240,791, for aspirating liquid into a pipette and dispensing liquid from the pipette.
  • Such pipetting devices comprise a housing, usually with rectangular cross-section, consisting of one part being the handle, and the other sleeve-shaped part, to which the pipette holder assembly is mounted generally perpendicularly.
  • the device comprises a liquid aspiration button and a liquid dispensing button, both mounted in the handle.
  • the pipetting device for aspirating liquid into a pipette and dispensing liquid from the pipette comprises a housing and a handle, whereas the end portion of the housing comprises a cylindrical raceway, to which the pipette holder assembly is mounted by the means of a connecting assembly capable of sliding on the cylindrical raceway at the housing end portion for the sake of changing the orientation angle of the pipette axis in one plane with respect to the handle.
  • the connecting assembly comprises a slider slidably set in the rectangular opening in the cylindrical raceway at the end portion of the housing.
  • the slider comprises a connecting member connected to the pipette holder assembly and to the air tubing.
  • the cap of the holder assembly is pressed to the cylindrical raceway at the housing end portion in a fixed position of the pipette with respect to the handle.
  • the pipetting device for aspirating liquid into a pipette and dispensing liquid from the pipette comprises a housing and a handle, whereas the end portion at the housing comprises a spherical raceway, to which the pipette holder assembly is mounted by the means of a connecting assembly capable of sliding on the spherical raceway of the housing end portion for the sake of changing the orientation angle of the pipette axis in every plane with respect to the handle.
  • the connecting assembly comprises the first slider slidably set in the rectangular opening in the spherical raceway at the housing end portion.
  • the connecting assembly comprises the second slider slidably set in the rectangular opening of the first slider.
  • the main axis of the rectangular opening in the first slider is perpendicular to the main axis of the rectangular opening in the spherical raceway at the end portion of the housing.
  • the second slider comprises a connecting member connected to the pipette holder assembly and to the air tubing.
  • the cap of the holder assembly is pressed to the spherical raceway at the housing end portion in a fixed position of the pipette with respect to the handle.
  • the solution according to the invention provides changeability of orientation angle of the axis of a pipette mounted to the pipette holder assembly in one plane or in every plane with respect to the handle.
  • FIG. 1 shows in partial section the pipetting device with cylindrical raceway
  • FIG. 2 shows the connecting assembly of the device from the FIG. 1 ;
  • FIG. 3 shows partial section of the pipetting device with spherical raceway
  • FIG. 4 shows the connecting assembly of the device from the FIG. 3 ;
  • the pipetting device shown in the FIG. 1 and FIG. 2 comprises a housing ( 1 ) with a handle ( 2 ), and a holder assembly ( 3 ) for a pipette ( 4 ).
  • the handle ( 2 ) has liquid aspiration button ( 5 ), and liquid dispensing button ( 6 ), which control the flow of air to the pipette ( 4 ).
  • the housing ( 1 ) end portion ( 7 ) comprises cylindrical raceway ( 8 ) which surface is a sector of a cylindrical surface.
  • the pipette ( 4 ) holder assembly ( 3 ) is mounted to the cylindrical raceway ( 8 ) by the means of the connecting assembly ( 9 ) capable of sliding on the cylindrical raceway ( 8 ) of the housing ( 1 ) end portion ( 7 ) for the sake of changing the orientation angle of the pipette ( 4 ) axis in one plane with respect to the handle ( 2 ).
  • the connecting assembly ( 9 ) has a slider ( 10 ) slidably mounted in a rectangular opening ( 1 ) in the cylindrical raceway ( 8 ) of the housing ( 1 ) end portion ( 7 ), whereas the shape of the slider ( 10 ) preferably matches the surface of the cylindrical raceway ( 8 ), while the main axis of the rectangular opening ( 11 ) in the cylindrical raceway ( 8 ), on which the slider ( 10 ) slides, preferably lies in the same plane as the axis of the pipette ( 4 ) and the axis of the handle ( 2 ).
  • the connecting assembly ( 9 ) includes a connecting member ( 12 ) positioned centrally in the slider ( 10 ), and connected to the pipette ( 4 ) holder assembly ( 3 ), and to an air tubing ( 13 ), and the connecting assembly ( 9 ) comprises, at its end proximal to the holder assembly ( 3 ), a cylindrical portion ( 14 ) with male thread.
  • the pipette ( 4 ) holder assembly ( 3 ) is mounted to the cylindrical raceway ( 8 ) of the housing ( 1 ) end portion ( 7 ) by the means of a cap ( 15 ) with female thread which is screwed upon the cylindrical portion ( 14 ) of the connecting assembly ( 9 ).
  • the end portion ( 7 ) of the housing ( 1 ) has a spherical raceway ( 16 ) which surface is a sector of a spherical surface.
  • the pipette ( 4 ) holder assembly ( 3 ) is mounted to the spherical raceway ( 16 ) by the means of a connecting assembly ( 17 ) improved in comparison to the connecting assembly ( 9 ) from pipetting device shown in FIG. 1 and FIG.
  • the connecting assembly ( 17 ) includes a first slider ( 18 ) slidably set in a rectangular opening ( 19 ) in the spherical raceway ( 16 ) of the housing ( 1 ) end portion ( 7 ), whereas the shape of the first slider ( 18 ) preferably matches the spherical raceway ( 16 ) of the housing ( 1 ) end portion ( 7 ), and includes a second slider ( 20 ) slidably set in a rectangular opening ( 21 ) in the first slider ( 18 ), whereas the shape of the second slider ( 20 ) preferably matches the rectangular opening ( 21 ) in the first slider ( 18 ).
  • the main axis of the rectangular opening ( 21 ) in the first slider ( 18 ), on which the second slider ( 20 ) slides is perpendicular to the main axis of the rectangular opening ( 19 ) in the spherical raceway ( 16 ), on which the first slider ( 18 ) slides.
  • the connecting assembly ( 17 ) comprises centrally positioned in the second slider ( 20 ) the connecting member ( 12 ) connected to the pipette ( 4 ) holder assembly ( 3 ), and to the air tubing ( 13 ), and the connecting assembly ( 17 ) includes, at the end proximal to the holder assembly ( 3 ), the cylindrical part ( 14 ) with male thread.
  • the pipette ( 4 ) holder assembly ( 3 ) is mounted to the spherical raceway ( 16 ) of the housing ( 1 ) end portion ( 7 ) by the cap ( 15 ) with female thread which is screwed upon the cylindrical portion ( 14 ) of the connecting assembly ( 9 ).
  • the cap ( 15 ) of the holder assembly ( 3 ) In fixed position of the pipette ( 4 ) with respect to the handle ( 2 ), the cap ( 15 ) of the holder assembly ( 3 ), after thread tightening, is pressed to the spherical raceway ( 16 ) of the housing ( 1 ) end portion ( 7 ).

Abstract

A pipetting device comprises a housing (1) with a handle (2) and a pipette (4) holder assembly (3), wherein the housing (1) end portion (7) incorporates a spherical raceway (16) to which the pipette (4) holding assembly (3) in mounted by the means of a connecting assembly (17) capable of sliding on the spherical raceway (16) at the housing (1) end portion (7) to facilitate the change of orientation angle of the pipette (4) axle in every plane with respect to the handle (2). The connecting assembly (17) comprises a first slider (18) slidably set in a rectangular opening (19) in the spherical raceway (16) at the housing (1) end portion (7), and a second slider (20) slidably set in a rectangular opening (21) in the first slider (18).

Description

BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a pipetting device for aspirating liquid into a pipette and dispensing liquid from the pipette.
2. Description of the Related Art
There are known pipetting devices, e. g. from the German patent publication No. 3818704 or U.S. Pat. Nos. 3,963,061, 4,624,147 and 6,240,791, for aspirating liquid into a pipette and dispensing liquid from the pipette. Such pipetting devices comprise a housing, usually with rectangular cross-section, consisting of one part being the handle, and the other sleeve-shaped part, to which the pipette holder assembly is mounted generally perpendicularly. Moreover the device comprises a liquid aspiration button and a liquid dispensing button, both mounted in the handle.
SUMMARY OF THE INVENTION
According to the present invention, the pipetting device for aspirating liquid into a pipette and dispensing liquid from the pipette, comprises a housing and a handle, whereas the end portion of the housing comprises a cylindrical raceway, to which the pipette holder assembly is mounted by the means of a connecting assembly capable of sliding on the cylindrical raceway at the housing end portion for the sake of changing the orientation angle of the pipette axis in one plane with respect to the handle.
Preferably the connecting assembly comprises a slider slidably set in the rectangular opening in the cylindrical raceway at the end portion of the housing.
Preferably the slider comprises a connecting member connected to the pipette holder assembly and to the air tubing.
Preferably the cap of the holder assembly is pressed to the cylindrical raceway at the housing end portion in a fixed position of the pipette with respect to the handle.
According to a variety of the present invention, the pipetting device for aspirating liquid into a pipette and dispensing liquid from the pipette, comprises a housing and a handle, whereas the end portion at the housing comprises a spherical raceway, to which the pipette holder assembly is mounted by the means of a connecting assembly capable of sliding on the spherical raceway of the housing end portion for the sake of changing the orientation angle of the pipette axis in every plane with respect to the handle.
Preferably the connecting assembly comprises the first slider slidably set in the rectangular opening in the spherical raceway at the housing end portion.
Preferably the connecting assembly comprises the second slider slidably set in the rectangular opening of the first slider.
Preferably the main axis of the rectangular opening in the first slider is perpendicular to the main axis of the rectangular opening in the spherical raceway at the end portion of the housing.
Preferably the second slider comprises a connecting member connected to the pipette holder assembly and to the air tubing.
Preferably the cap of the holder assembly is pressed to the spherical raceway at the housing end portion in a fixed position of the pipette with respect to the handle.
The solution according to the invention provides changeability of orientation angle of the axis of a pipette mounted to the pipette holder assembly in one plane or in every plane with respect to the handle.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings, which are incorporated in, and form a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the invention. In the drawings:
FIG. 1 shows in partial section the pipetting device with cylindrical raceway;
FIG. 2 shows the connecting assembly of the device from the FIG. 1;
FIG. 3 shows partial section of the pipetting device with spherical raceway;
FIG. 4 shows the connecting assembly of the device from the FIG. 3;
while elements common for the devices depicted on the drawing have the same numerical designation.
DETAILED DESCRIPTION OF THE INVENTION
Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.
The pipetting device shown in the FIG. 1 and FIG. 2 comprises a housing (1) with a handle (2), and a holder assembly (3) for a pipette (4). The handle (2) has liquid aspiration button (5), and liquid dispensing button (6), which control the flow of air to the pipette (4). In turn, the housing (1) end portion (7) comprises cylindrical raceway (8) which surface is a sector of a cylindrical surface. The pipette (4) holder assembly (3) is mounted to the cylindrical raceway (8) by the means of the connecting assembly (9) capable of sliding on the cylindrical raceway (8) of the housing (1) end portion (7) for the sake of changing the orientation angle of the pipette (4) axis in one plane with respect to the handle (2). In order to accomplish this, the connecting assembly (9) has a slider (10) slidably mounted in a rectangular opening (1) in the cylindrical raceway (8) of the housing (1) end portion (7), whereas the shape of the slider (10) preferably matches the surface of the cylindrical raceway (8), while the main axis of the rectangular opening (11) in the cylindrical raceway (8), on which the slider (10) slides, preferably lies in the same plane as the axis of the pipette (4) and the axis of the handle (2). Moreover the connecting assembly (9) includes a connecting member (12) positioned centrally in the slider (10), and connected to the pipette (4) holder assembly (3), and to an air tubing (13), and the connecting assembly (9) comprises, at its end proximal to the holder assembly (3), a cylindrical portion (14) with male thread. The pipette (4) holder assembly (3) is mounted to the cylindrical raceway (8) of the housing (1) end portion (7) by the means of a cap (15) with female thread which is screwed upon the cylindrical portion (14) of the connecting assembly (9). In fixed position of the pipette (4) with respect to the handle (2), the cap (15) of the holder assembly (3), after thread tightening, is pressed to the cylindrical raceway (8) of the housing (1) end portion (7).
In a variety of the embodiment of the pipetting device according to the invention illustrated in the FIG. 3 and FIG. 4 the end portion (7) of the housing (1) has a spherical raceway (16) which surface is a sector of a spherical surface. The pipette (4) holder assembly (3) is mounted to the spherical raceway (16) by the means of a connecting assembly (17) improved in comparison to the connecting assembly (9) from pipetting device shown in FIG. 1 and FIG. 2, which is capable of sliding on the spherical raceway (16) of the housing (1) end portion (7) for the sake of changing the orientation angle of the pipette (4) axis in all planes with respect to the handle (2). For this purpose, the connecting assembly (17) includes a first slider (18) slidably set in a rectangular opening (19) in the spherical raceway (16) of the housing (1) end portion (7), whereas the shape of the first slider (18) preferably matches the spherical raceway (16) of the housing (1) end portion (7), and includes a second slider (20) slidably set in a rectangular opening (21) in the first slider (18), whereas the shape of the second slider (20) preferably matches the rectangular opening (21) in the first slider (18). Preferably the main axis of the rectangular opening (21) in the first slider (18), on which the second slider (20) slides, is perpendicular to the main axis of the rectangular opening (19) in the spherical raceway (16), on which the first slider (18) slides. Moreover the connecting assembly (17) comprises centrally positioned in the second slider (20) the connecting member (12) connected to the pipette (4) holder assembly (3), and to the air tubing (13), and the connecting assembly (17) includes, at the end proximal to the holder assembly (3), the cylindrical part (14) with male thread. The pipette (4) holder assembly (3) is mounted to the spherical raceway (16) of the housing (1) end portion (7) by the cap (15) with female thread which is screwed upon the cylindrical portion (14) of the connecting assembly (9). In fixed position of the pipette (4) with respect to the handle (2), the cap (15) of the holder assembly (3), after thread tightening, is pressed to the spherical raceway (16) of the housing (1) end portion (7).
Basing on the above examples of the invention embodiments it is possible to make various changes, modifications and improvements remaining within the scope of this invention, whereas such changes, modifications and improvements are obvious in the light of the disclosed essence of the invention and enclosed claims.

Claims (11)

1. A pipetting device for aspirating liquid into a pipette and dispensing liquid from the pipette, comprising a housing and a handle, wherein an end portion of the housing comprises a raceway to which a pipette holder assembly is mounted by means of a connecting assembly capable of sliding on the raceway at the housing end portion for the sake of changing the orientation angle of the pipette axis in at least one plane with respect to the handle.
2. The pipetting device of claim 1, wherein the raceway comprises a cylindrical raceway for the sake of changing the orientation angle of the pipette axis in one plane with respect to the handle.
3. The device of claim 2, wherein the connecting assembly comprises a slider slidably set in a rectangular opening in the cylindrical raceway at the end portion of the housing.
4. The device of claim 3, wherein the slider comprises a connecting member connected to the pipette holder assembly, and to an air tubing.
5. The device of claim 1, wherein a cap of the holder assembly is pressed to the cylindrical raceway at the housing end portion in a fixed position of the pipette with respect to the handle.
6. The pipetting device of claim 1, wherein the raceway comprises a spherical raceway for the sake of changing the orientation angle of the pipette axis in every plane with respect to the handle.
7. The device of claim 6, wherein the connecting assembly comprises a first slider slidably set in a rectangular opening in the spherical raceway at the housing end portion.
8. The device of claim 7, wherein the connecting assembly comprises a second slider slidably set in a rectangular opening of the first slider.
9. The device of claim 8, wherein the second slider comprises the connecting member connected to the pipette holder assembly, and to an air tubing.
10. The device of claim 8, wherein the main axis of the rectangular opening in the first slider is perpendicular to a main axis of the rectangular opening in the spherical raceway at the end portion of the housing.
11. The device of claim 6, wherein a cap of the holder assembly is pressed to the spherical raceway at the housing end portion in a fixed position of the pipette with respect to the handle.
US10/544,386 2003-02-11 2003-04-08 Pipetting device Expired - Fee Related US7444890B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PL358680A PL200757B1 (en) 2003-02-11 2003-02-11 Pipetting device
PLP.358680 2003-02-11
PCT/PL2003/000036 WO2004071664A1 (en) 2003-02-11 2003-04-08 Pipetting device

Publications (2)

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US20060144168A1 US20060144168A1 (en) 2006-07-06
US7444890B2 true US7444890B2 (en) 2008-11-04

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US10/544,386 Expired - Fee Related US7444890B2 (en) 2003-02-11 2003-04-08 Pipetting device

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US (1) US7444890B2 (en)
EP (1) EP1592508A1 (en)
JP (1) JP2006513842A (en)
AU (1) AU2003303906A1 (en)
PL (1) PL200757B1 (en)
WO (1) WO2004071664A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL200757B1 (en) 2003-02-11 2009-02-27 Pz Htl Spo & Lstrok Ka Akcyjna Pipetting device
US20080199361A1 (en) * 2007-02-16 2008-08-21 Francis Gomes Hand-held pipetting device
US9242244B2 (en) * 2010-02-09 2016-01-26 Douglas T. Gjerde Method and apparatus for pipette tip columns
CN114173926B (en) * 2019-06-05 2023-10-03 康宁股份有限公司 Bracket for hand-held pipettor

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3766785A (en) * 1971-05-17 1973-10-23 Analytical Prod Automatic pipette
US3963061A (en) 1975-09-16 1976-06-15 Drummond Scientific Company Apparatus for drawing liquids into, and expelling liquids from a pipette
US4624147A (en) 1985-11-12 1986-11-25 Drummond Scientific Company Pipet gun for drawing liquid into and expelling it from a pipet
JPS62134536A (en) * 1985-12-06 1987-06-17 Fuji Photo Film Co Ltd Duplex pipet
DE3818704A1 (en) 1988-06-01 1989-12-07 Hirschmann Glasgeraete PIPETTING DEVICE
US6240791B1 (en) 1998-08-07 2001-06-05 James W. Kenney User-replaceable pipette gun grip
US6253628B1 (en) 1998-08-21 2001-07-03 Becton Dickinson And Company Apparatus for drawing liquids into and expelling liquids from a pipet at variable flow rates
WO2004071664A1 (en) 2003-02-11 2004-08-26 Pz Htl Spolka Akcyjna Pipetting device
US6982063B2 (en) * 2001-05-25 2006-01-03 Matrix Technologies Corp Automated pipetting system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3766785A (en) * 1971-05-17 1973-10-23 Analytical Prod Automatic pipette
US3963061A (en) 1975-09-16 1976-06-15 Drummond Scientific Company Apparatus for drawing liquids into, and expelling liquids from a pipette
US4624147A (en) 1985-11-12 1986-11-25 Drummond Scientific Company Pipet gun for drawing liquid into and expelling it from a pipet
JPS62134536A (en) * 1985-12-06 1987-06-17 Fuji Photo Film Co Ltd Duplex pipet
DE3818704A1 (en) 1988-06-01 1989-12-07 Hirschmann Glasgeraete PIPETTING DEVICE
US6240791B1 (en) 1998-08-07 2001-06-05 James W. Kenney User-replaceable pipette gun grip
US6253628B1 (en) 1998-08-21 2001-07-03 Becton Dickinson And Company Apparatus for drawing liquids into and expelling liquids from a pipet at variable flow rates
US6982063B2 (en) * 2001-05-25 2006-01-03 Matrix Technologies Corp Automated pipetting system
WO2004071664A1 (en) 2003-02-11 2004-08-26 Pz Htl Spolka Akcyjna Pipetting device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
English Language Abstract of EP Equivalent (0344792) for DE 38 18 704.

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Publication number Publication date
AU2003303906A1 (en) 2004-09-06
PL200757B1 (en) 2009-02-27
WO2004071664A1 (en) 2004-08-26
US20060144168A1 (en) 2006-07-06
EP1592508A1 (en) 2005-11-09
PL358680A1 (en) 2004-08-23
JP2006513842A (en) 2006-04-27

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Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CZERNECKI, ANDRZEJ;WYSZOGRODZKI, WOJCIECH;JANKOWSKI, ANDRZEJ;AND OTHERS;REEL/FRAME:017714/0437;SIGNING DATES FROM 20051221 TO 20060103

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Effective date: 20121104